package com.lsh.controller;

import com.google.code.kaptcha.Producer;
import com.lsh.annotation.LoginRequired;
import com.lsh.pojo.User;
import com.lsh.service.impl.UserServiceImpl;
import com.lsh.utils.CommunityConsent;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.*;

import javax.imageio.ImageIO;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Map;

@Controller
public class RegisterController implements CommunityConsent {
    @Autowired
    private UserServiceImpl userService;
    @Autowired
    private Producer kaptchaProducer;
    //转到注册页面
    @RequestMapping(path = "/register", method = RequestMethod.GET)
    public String getRegisterPage() {
        return "/site/register";
    }
    //转到登录页面login
    @RequestMapping(path = "/login", method = RequestMethod.GET)
    public String getLoginPage() {
        return "/site/login";
    }

    //注册功能的实现
    @RequestMapping(path = "/register", method = RequestMethod.POST)
    public String register(Model model, User user) {
        Map<String, Object> map = userService.register(user);
        if (map == null || map.isEmpty()) {
            model.addAttribute("msg", "注册成功,我们已经向您的邮箱发送了一封激活邮件,请尽快激活!");
            model.addAttribute("target", "/index");
            return "/site/operate-result";
        } else {
            model.addAttribute("usernameMsg", map.get("usernameMsg"));
            model.addAttribute("passwordMsg", map.get("passwordMsg"));
            model.addAttribute("emailMsg", map.get("emailMsg"));
            return "/site/register";
        }
    }
    //实现激活的功能
    @GetMapping("/activation/{userId}/{code}")
    public String activeUser(Model model,@PathVariable("userId") int userId,@PathVariable("code") String code){
        int result = userService.activation(userId,code);
        if (result == 1) {
            model.addAttribute("msg", "激活成功,您的账号已经可以正常使用了!");
            model.addAttribute("target", "/login");
        } else if (result == 0) {
            model.addAttribute("msg", "无效操作,该账号已经激活过了!");
            model.addAttribute("target", "/index");
        } else {
            model.addAttribute("msg", "激活失败,您提供的激活码不正确!");
            model.addAttribute("target", "/index");
        }
        return "/site/operate-result";
    }
    //生成验证码
    @RequestMapping(path = "/kaptcha", method = RequestMethod.GET)
    public void getKaptcha(HttpServletResponse response, HttpSession session) {
        // 生成验证码
        String text = kaptchaProducer.createText();
        BufferedImage image = kaptchaProducer.createImage(text);
        // 将验证码存入session
        session.setAttribute("kaptcha", text);
        // 将突图片输出给浏览器
        response.setContentType("image/png");
        try {
            OutputStream os = response.getOutputStream();
            ImageIO.write(image, "png", os);
        } catch (IOException e) {
        }
    }
    //实现登录功能
    @RequestMapping(path = "/login", method = RequestMethod.POST)
    public String login(String username, String password, String code, boolean rememberme,
                        Model model, HttpSession session, HttpServletResponse response) {
        // 检查验证码
        String kaptcha = (String) session.getAttribute("kaptcha");
        if (StringUtils.isBlank(kaptcha) || StringUtils.isBlank(code) || !kaptcha.equalsIgnoreCase(code)) {
            model.addAttribute("codeMsg", "验证码不正确!");
            return "/site/login";
        }
        // 检查账号,密码
        int expired = rememberme ? RENEMBER_EXPIRED_DAY : DEFAULT_EXPIRED_DAY;
        Map<String, Object> map = userService.login(username, password, expired);
        //如果账号密码都正确，map里将会存储当前用户的登录凭证
        if (map.containsKey("ticket")) {
            Cookie cookie = new Cookie("ticket", map.get("ticket").toString());
            cookie.setPath("/");
            cookie.setMaxAge(expired*3600*12);
            response.addCookie(cookie);
            return "redirect:/index";
        } else {
            model.addAttribute("usernameMsg", map.get("usernameMsg"));
            model.addAttribute("passwordMsg", map.get("passwordMsg"));
            return "/site/login";
        }
    }
    //实现退出功能
    @LoginRequired
    @GetMapping("/logout")
    public String logout(@CookieValue("ticket") String ticket){
        userService.logout(ticket);
        return "redirect:/";
    }
}
